Acheson Corporation, which applies manufacturing overhead on the basis of machine-hours, has provided the following data for its most recent year of operations. Estimated manufacturing overhead Estimated machine-hours Actual manufacturing overhead Actual machine-hours $157,500 4,590 $156,900 4,760 The estimates of the manufacturing overhead and of machine-hours were made at the beginning of the year for the purpose of computing the company's predetermined overhead rate for the year. The predetermined overhead rate is closest to